Prefabricated Segmentally Assembled Concrete Bridge Piers and Its Connection Technology
A concrete and segment technology, applied in the erection/assembly of bridges, bridges, bridge parts, etc., can solve the problems of extremely high hoisting accuracy, high construction accuracy, and small construction allowable errors, achieving high construction efficiency and workload. Less, less difficult effect
Active Publication Date: 2017-12-29
JSTI GRP CO LTD +1
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Problems solved by technology
This has promoted the development of prefabricated segmental assembly of bridge piers. Since there is no need to stretch prestressed tendons and the on-site workload is small, the technology of connecting upper and lower segments with grouting sleeves has been widely used in areas with low seismic intensity. However, existing The advanced grouting sleeve connection technology has small construction allowable error and high construction accuracy requirements, especially when the upper and lower sections need to rely on multiple grouting sleeves to connect multiple steel bars at the same time, the hoisting accuracy is extremely high, and the construction is very difficult
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Embodiment 1
[0030] Such as Figure 1~5 The schematic diagram of the prefabricated segmental assembled concrete pier structure of the present invention is shown, including a lower threaded steel rod 1, an upper threaded steel rod 2, a threaded sleeve 3, a threaded section 3-1, a connecting section 3-2, and a sleeve body 3 -3. Cylindrical notch 4, grouting hole 5, grouting hole 6, joint surface 7, groove 8, convex rib 9 and hole 10.
[0031] The lower threaded steel rod 1 is pre-buried in the lower part of the pier body segment, the upper threaded steel rod 2 is pre-buried in the upper part of the pier body segment, and epoxy resin cement is applied between the connected pier body segments to form a joint surface 7 . The bottom of threaded sleeve 3 is threaded section 3-1, the top of threaded section 3-1 is connected with connection section 3-2, the top of connection section 3-2 is connected with sleeve body 3-3, the thread of threaded sleeve 3 Section 3-1 connects the lower threaded steel...
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The invention discloses a prefabricated section-assembled concrete bridge pier and its connection technology. The lower threaded steel rod is pre-buried in the lower part of the pier body section, the upper threaded steel rod is pre-buried in the upper part of the pier body section, and the lower part of the threaded sleeve is Threaded section, the upper part of the threaded section is connected with the connecting section, the upper part of the connecting section is connected with the sleeve body, the threaded section of the threaded sleeve is connected with the lower threaded steel rod, the upper threaded steel rod is inserted into the threaded sleeve from the top, and the outer sleeve is connected with the cylinder The lower threaded steel rod, the upper threaded steel rod, the threaded sleeve and the cylindrical notch are fixedly connected by cement mortar. By separating the grouting sleeve into upper and lower parts, the site only needs to screw in the detachable threaded sleeve in the lower half, and the pier body segment can be hoisted directly, with less work; the diameter of the cylindrical notch is the diameter of the detachable sleeve Twice the diameter of the top, the top diameter of the detachable sleeve is three times the diameter of the pre-embedded threaded steel rod, allowing large construction errors, high construction efficiency, low difficulty, and easy operation.
Description
technical field [0001] The invention relates to a segmental bridge pier prefabrication process, in particular to a prefabricated segmental assembled concrete bridge pier and a connection process thereof. Background technique [0002] In recent years, bridge construction has shown the characteristics of large number of piers and short construction period. This has promoted the development of prefabricated segmental assembly of bridge piers. Since there is no need to stretch prestressed tendons and the on-site workload is small, the technology of connecting upper and lower segments with grouting sleeves has been widely used in areas with low seismic intensity. However, existing The advanced grouting sleeve connection technology has small construction allowable error and high construction accuracy requirements, especially when the upper and lower sections need to rely on multiple grouting sleeves to connect multiple steel bars at the same time, the hoisting accuracy is extremel...
Claims
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IPC IPC(8): E01D19/02E01D21/00
CPCE01D19/02E01D21/00
Inventor 张建东刘朵顾建成吴智深刘钊李勇
Owner JSTI GRP CO LTD